Windshield heater



Feb. 11, 1936.

i.. T. PAGE WINDSHIELD HEATER Filed' July 14, 1934 INVENTOR Lut/zei' ZT Page g BY wvl/ATTORNEY i reigned Feb..` 11, i936 'I t i. l' f2-,030,117

1 UNITED STATES PATENT oFFicE I Annlicliiv lielslsidriisaizi 1 zoieims. (01.219-19) Among the principal objects which the present of one layer are juxtaposed upon the inturned invention has in view are: to provide 'a c'omplete edge of the other layer, providing a peripherally sectional unit of transparent glass in a, windclosed space between the said layers. Preferably, shield frame and means for providing heat therethe engagement between said edges, supplementl in; to utilize such means whereby heat may be ed by the overlying cushioning means, is sub- 5 transmitted when desired; to provide means to stantially airtight. Within the said closed space regulate the'- arnount of current -to be utilized; between said layers, and preferably next the into provide one or more heating elements and turned edges thereof is provided heatingmeans.

held` apart by structural means Iin the manufac- As here specifically illustrated, said heating means ture of the unit; and to secure simplicity of concomprises a plurality of heating elements or coils 10 lstruction and operation. I1 and I8, one adjacent the other prior to as"- In the drawing: l sembly of the glass layers. Said heating elements Figure 1 is an elevation of a duplex windshield, or coils preferably extend the full peripheral disone section of the .windshield being wholly protance adjacent the outer edge of the section so as vided with the heatingelements, said section benot t0 obstruct the View through the section und 15 ing partly broken away and showing the heating preferably being hidden from view by virtue of the elements, also showing a source ofelectrical supeasing l2. ply employed in carrying out; the invention; In order that the heating elements or coils I'I Figure 2 is an'enlarged sectional view shown as and i3 d0 not inadvertently COme in entect with y taken on the line 2-.4 of Figure `1; and eachother during use and thereby cause a short 20 Figure 3 is an enlarged detail sectional view CrCl1itI heile devised mee-ns in the construction of one corner of the windshield and similar to 0f the glass-layers to keep the seid elements sep- Figure l. y l arated. Such means may conveniently be pro- As seen in the' drawing, my improved windieeting tips i9 Within the spate between theV g5 shield heater will make it possible for easy installayers nOrmel t0 said l-Yers end spaced at suit- 25 lation in cars being manufactured as well as for able distances frOIn each Other s0 es t0 keep the cars muse, heating elements substantially in parallelV rela- As seen in Figure 1, the windshieldcomprises tiOnShiP- It Will be nQted that the seidtips are sections Il) and II and as will be readily seen, the preferably molded as integral DartsOf the glass section I0 represents that part of the windshield and each 0f 8- length Substantially veilllttl t0 the 30 `which is directiy in front of the driver of en' authicknessV of the space between lthe layers- Seid tcmobiie. However, if desired, beth sections may' tipey are furthermore staggered so as tohave the be easily accommodated with the invention. My One rOW thereof nea-rest thev edge DrOJeeting frOm improved heater is adaptable for winter driving, the layer 'lil Which Will eet es a Support fOr the whereby the use of the car-can be enhanced for Qutermnst heating element or coil I1 and the 35 constant driving and thereby eliminate the fears Other I'UW 0! tips Projecting frOrn the lttier I6 or danger wniie driving, particularly rrcm snow vand Support the innermost heating element orv or ice forming on the windshield to obstruct the Coil i0- t y' view of the driver. i l Any suitable means may be employed for sup- 40 In carrying out the invention, and reierrin piyinsthe Source o! electrical Supply to the heat- 40` more particularlyto Figures 1 and 3 I have shown ing elements,and one suchmeans may bein the section III of the windshield broken away at one nature of current from the battery 20 of the corner to more clearly show .the invention. Said 'motor vehicle'. Since I'have found it convenient section IIIv in construction has' the usual c'asing or to use two heating elements, it does not necesframe I2 to protect the glass I3, and'between the Sarily mean that both elements needbe in opera- 45 casing and glassis provided a suitable cushiontion at the same time. To that end Ihave shown A ing means. Such. means may preferably-be a Y a. switch 2| which may conveniently be mounted material non-conductive to heat, s'uchas asbestos to the dashboard of the motor/vehicle and ac*- Il andfentirely covers that portion of the glass cessible to the driver at all times. Should a 50, encased by the casing or frame I2, Y f coating of snow. ice', fog orrthe like be light on l50 4n; is preferable that che glass la bemeided and the windshield, the operatofmay then turn the in two layers I5 andl I6 to provide a windshield switch to the position marked ,'lst,which will section of double thickness. The edges of the `cause the one heating element Il'tofunction and said layers tum inward normal to the general therebyquickly dissipate any moderate coating piane o f the layer, and,` as the' inturned edgesappearing on the windshield and keep the-saine 6'5- clear until the Switch is turned to the "0 position. Should the coating be of heavy proportions, the `switch may then be turned to the position marked 2nd thereby connecting both heating elements l1 and I8 in parallel to the source and causing the heating means to function at full capacity or with a greater amountloi heat than when. only one element was in operation. Theheat obtained is effective upon the outside of the windshield. By virtue of the provision of two .heating elements in parallel, should one burn out,

` there will still be another element to continu tion as adaptable for use on automobiles I do not wish to be understood as limiting myself to that particular use, except as set forth in the following claims when construed in thI lightoi' the prior art.

I claim: l s 1. A heated windshield as characterized coma plurality of layers of ltransparent glass,

said layers at their outer edges being turned inwardly and toward each other thereby providing a peripherally continuous seat at said outer edges and anopen space between thelother parts ot the ,Y layers for providing a clear vision, each of said layers having inwardly` projecting posts with re- 'a,o`so,1;17- spect to each other extending substantially the distance of the operi space and being integral' of said layers and retaining the layers in constant spaced relation, a plurality of heating elements extending peripherally adjacent the inside of the several peripheral edges of the layers, said elements Aproviding each a; plurality of sections and each section being parallel to, the

next adjacent peripheral edge o/f the layers, 'and passing next to the posts said sections being held in spaced relation by the said integral posts.

2. A heated windshield as'characterized comprising a plurality of layers of transparent glass,

said layers at their outer edges being turned inwardly and toward each other thereby providing a peripherally continuous seat at said outer edges and an open space between the other parts of the l layers for providing a. clear vision, each of said layers having inwardly projecting posts with respect to each other extending substantially the distance of the open space and being integral parts of said layers and retaining the layers in constant spaced relation, a plurality of heating elements extending peripherally adjacent the inside of the several. peripheral edges of the layers, said elements providing each a plurality of sections and each section being parallel to the next adjacent peripheral edge of the layers, and

.passingnext to the posts said sections being held in spaced relation by the said integral posts and means exteriorly of said layers extending parallel to said sections and overlying the posts and heating elements whereby said posts and elements are completely hidden from view.

LUTHER T` PAGE. 

